In your first post you say it needs 10 to 14 Vac input. So almost 19 volts is too high. Does that matter ? Its impossible to advise without seeing the circuit details. For example if 25 volts caps are used then 19 volts ac gives almost 27 volts dc after rectification and smoothing. Assuming that was OK and 35 volt caps were fitted then you have the problem of "what else" this unregulated supply feeds and whether or not the dissipation of any PSU components is being exceeded.

On the basis of what we know I would advise not to use this transformer unless you are 100% confident the above points are covered..